0. logcheck- The logcheck tool allows summeries of log file entries to be mailed to a system administrator via a cron job.
These summeries can alert the administrator(s) to any anomolous events upon the system, from errors with daemons to intrusion attempts.

4. Torrus packaging project- This is the Debian packaging project for Torrus, flexible and scalable frontend for Round Robin Database (RRDtool), implemented in Perl. More information is available at http://rrfw.sourceforge.net.